Fix bug.

seminar.gemspec

@@ -8,6 +8,8 @@ begin
 rescue => e
   puts [e.to_s,e.backtrace]
 end
+bundle_update_flag = ARGV[0]=='update' || ARGV[0]=='install'
+if bundle_update_flag
   require "json"
   env_pwd = ENV['PWD']
   app_path = File.expand_path(__dir__)
@@ -73,6 +75,7 @@ all_template.each do |folder|
       end
     end
   end
+end
 Gem::Specification.new do |s|
   s.name = "seminar"
   s.version = "0.0.1"